Translated by G. Guillemot-Magitot, cover illustration by J. Saunier. The inside
illustrations were by Clifford Webb.

Nancy and Peggy Blackett curiously become Marion and Margot in the French
editions. The Swallows are Jean, Suzanne, Micky(!) and Roger. Uncle Jim is
known as "Oncle Paul", while Polly the parrot is Jacquot.

Nancy/Marion's usual curses "Jibbooms and Bobstays!" are clearly untranslatable
as she quite often remarks,"Enfer et Damnation!" (Hell and Damnation!). No
wonder the Great-Aunt disapproved!